Matrix-truing apparatus.



No. 727,355. A PATENTED MAY 5, 1903. H. G. HANSEN. MATRIX TRUINGAPPARATUS.

APPLICATION FILED DBO. 14, 1901.

N0 MODEL.

UNTTEE STATES Patented May 5, 1903.

HANS O. HANSEN, OF NEWTON, MASSACHUSETTS.

MATRlX-TRUING APPARATUS.

srncxsroa'rrolv forming part of Letters Patent No. 727,355, dated May 5,1903.

Application filed December 14, 1901. Serial No. 85,889. (No model.)

To all whom it may concern:

Be it known that I, HANS O. HANSEN, a citizen of the United States,residing at Newton, in the county of Middlesex and State ofMassachusetts, have invented an Improvement in Matrix-Truing Apparatus,of which the following description, in connection with the accompanyingdrawings, is a specification, like characters on the drawingsrepresenting like parts.

In the production of a matrix for casting type or characters forprinting in a type-casting machine it is now customary to file the faceof the matrix to a level and to then file or dress the sides of thematrix to bring them at right angles to the face thereof. This done, theface of the matrix outside of and about the character contained thereinin intaglio must be further filed until said face is exactly parallelwith the bottom of the impression representing the character.

I have aimed to facilitate the production of matrices and avoidhand-filing, which lessens the cost of their production.

In my invention I may take two pieces of metal and insert in a hole inthat one of said pieces which is to form the face of the matrix thecharacter formed in usual manner, preferably of a different metal fromthe plates, and I may secure said plates together in any usual orsuitable way, or I may sink in one face of a metal bar in any usualmanner the character desired. With a matrix formed in any usual manner,the manner of forming the same in the first instance being immaterial tomy invention, I may apply the partiallyformed matrix without any filingto an apparatus which I have devised to hold said matrix while its faceis being finished mechanically parallel to the bottom lines oftheintaglio character in the matrix, the finishing being done by asuitable tool of a metal-planer or similar machine.

I believe that I. am the first to complete a matrix by a tool in amachine instead of by hand-filing, and I intend to cover, broadly, anapparatus for doing away with handfiling whatever its construction.

My novel apparatus, as herein shown in one of the best forms now knownto me, comprises an adjustable matrix-holder shaped externally so thatit may be tipped in the direction of the length and Width of the matrix,the holder for the best results being spherical. The holder ismaintained frictionally in its adjusted position by a suitable clamp,and the holder has a notch to receive the matrix to be surfaced,suitable means coacting with the matrix in the notch to retain it firmlyin the holder. The clamp is made adjustable, that it may be moved in aguide toward and from the line occupied by the tool used to surface orplane the face of the matrix, and by tipping the holder any part of theface of the matrix may be placed with relation to the path of the toolused to remove any part of the matrix which is not truly parallel withthe entire bottom of the intaglio impression in the matrix.

Figure 1, in perspective, shows the clamp, theframe containing it, thematrix-holder containing a matrix, and a depth-gage applied in positionto detect any difference in level between the bottom of the impressionin the matrix and the face of a testing-surface. Fig. 2 is a viewshowing some of the parts represented in Fig. 1, a part of the clamp andthe gage being omitted. Fig. 3 is an inner side view of the part of theclamp left 0% from Fig. 2. Fig. 4 is a vertical section of the partsshown in Fig. 1 with the gage and matrix-holder omitted. Fig. 5 showsone form of matrix-holder in perspective. 4

Referring to the drawings, A represents a guide composed of two likeplates at a, presenting parallel ends 2 3, and a connected bar a (seeFigs. 2 and 4,) the plates and bar being firmly united by suitablescrews a the ends 2 and 3 constituting testing-surfaces, to bedescribed.

The matrixholder which I have herein chosen to illustrate is composed,essentially, of a sphere or ball B. (Shown in elevation in Fig. 4 anddetached in Fig. 5.) The matrix-holder has a suitable notch 19, in whichmay be laid the matrix I), having in its face a character, as b inintaglio, the character herein shown representing the letter H. Thematrix having been laid in the notch 11 is secured therein firmly in anysuitable manner, as by a set-screw 12 The matrix referred to issustained in a suitable clamp composed, as shown, of two plates 0 0',each having a concaved portion to fit the exterior of the matrix-holder.The two plates are clamped firmly together by a suitable screw, as C, sothat by their friction they will prevent any movement of thematrix-holder. It is necessary at times to move the clamp and thematrix-holder longitudinally with relation to the guide-block a, and toeffect this adjustment that the face of the matrix may be placed exactlyin position with relation to the surfacing-tool of usual construction,such as used in a planer or similar machine, I have provided anadjusting-screw D, which is shaped to turn freelyin one member, as O, ofthe clamp and be restrained from longitudinal motion with relation tosaid clamp, the threaded end of the screw entering ascrew-thread in thebar a so that by rotation of the screw D the clamp may be movedlongitudinally in the guide and toward and from the path of movement ofany suitable tool, as stated. After having secured the matrix in thematrix-holder by the screw b the gage E, composed, essentially, of a bare, having a downturned foot c and held adjustably in a double foot e andprovided with a feeler e which is adjustable vertically with relation tosaid bar, is set upon the parallel ends 2 and 3 of the plates at and aof the guide A, said ends constituting a testing-surface, the doublefoot 6 resting on one end, as 2, of one of said plates, the downturnedend 6 resting on the opposite end 3 of the other plate. This done, theworkman turns the feeler until its point meets the bottom of theimpression or character made in the face of the matrix, and thereafterthe feeler is further turned to raise the end 6 from the end 3 of theplate a, so that the workman may just discern the light between said end6 and said end 3. In this condition he may move the gage by hand, sothat the point of the feeler will traverse all parts of the bottom ofthe character, and if one part or end of the impression is higher thananother, the screw 0 being slightly released, he tips the matrix holderhaving the matrix fixed therein in one and another direction until thepoint of the feeler indicates that the bottom line of the character isexactly at a level or exactly parallel to the ends 3 and 2 of the platesat a. When this is ascertained, the screw 0 is set up, causing the clampto hold the matrixholder firmly in position, and portions of the face ofthe matrix will stand above the upper edges 4 of the clamp-plate G C,some portions of the matrix-face projecting more than other portions,and thereafter while the guide is held firmly and securely in a planeror simi lar machine the tool of the machine of usual form will be madeto attack the face of the matrix, surface and smooth the same, leavingthe face of the matrix exactly parallel with the bottom of the characterformed in the matrix.

To adjust the matrix holder accurately when the screw C is sufficientlyloosened to permit the matrix to be turned in any direction, I haveprovided the matrix with a stud M, and through the plate 0, I haveinserted a screw M, that acts against one side of the stud, a spring min the opposite plate 0 working against the opposite side of the stud.The inner side of the plate 0 is provided with a rib n, threaded toreceive a screw M that acts against a part of the stud ninety degreesdistant from the point thereof acted upon the screw M, a suitablespring, as m acting against said stud at a point opposite the end ofsaid screw M The screw M is extended through an elongated slot in theside wall a, of the guide. The inner side of the plate 0 is grooved at nto receive the rib a. By turning the screws M and M the matrix-holdermay be accurately adjusted into any desired position and be retained insuch position.

I have not herein considered it necessary to show the cutting-tool of aplaner or the planer-bed upon which the guide A will be fixedly heldduring the operation of the tool, as any one skilled in the art willreadily understand how the guide may be fixed with relation to the bedand the tool be made to act on the face of the matrix to plane the sameto a true level,

Instead of surfacing the face of the matrix in a planing-machine havinga traveling bed I may perform this work in any other equivalent machine.

I do not in the present application claim the gage shown herein, as thisforms the subject of another and divisional application, filed January3, 1903, Serial No. 137,656.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. In a matrix-truing apparatus, a matrixholder provided with means forreceiving and sustaining a matrix, truing-surfaces disposed adjacentthereto, a clamp for sustaining the matrix-holder, and means foradjusting the matrix-holder in the clamp to bring the ma trix intotruing position with respect to the truing-surfaces.

2. In a matrix-truing apparatus, a spherical matrix-holder provided withmeans for receiving and sustaining a matrix, truingsurfaces disposedadjacent thereto, a clamp for sustaining the matrix-holder, and means totip the matrix-holder in the clamp both in the direction of the lengthand Width of the matrix to bring the matrix into truing position withrespect to the truing-surfaces.

3. In a matrix-truing apparatus, an adjustable matrix-holder providedwith means for sustaininga' matrix, means for sustaining thematrix-holder in desired adjustment, and truing-surfaces disposedadjacent the matrixholder for determining the position of thematrix-holderin its sustaining means to bring the matrix into truingposition.

4. In a matrix-truing apparatus, a matrixholder provided with means forsecuring a matrix therein, means for sustaining said matrix-holder,plates on opposite sides thereof provided with testing-surfaces adjacentthe matrix-holder, and devices for moving the matrix-holder withrelation to the testingsurfaces.

5. In a matriX-truing apparatus, a plate having a truing SurfaGe, amatrix-holder for sustaining a matrix, means for sustaining thematrix-holder, said plate being disposed adjacent to the matrix-holder,and devices to adjust the said sustaining means and matrix-holder withrelation to the truing-surface to place the bottom of thecharacter-impression in the matrix parallel with the said surface.

6. In a matriX-truing apparatus, a matrixholder for sustaining a matrix,a clamp for sustaining the matrix-holder, truing-surfaces disposed onopposite sides of said matrixholder, means for adjusting thematrix-holder name to this specification in the presence of 30 twosubscribing witnesses.

HANS O. HANSEN.

Witnesses:

GEO. W. GREGORY, EDITH M. STODDARD.

